The cold drawing process of stainless steel heat exchange tubes is to meet higher requirements for cold processed products. Most of the stainless steel heat exchange tubes need to be cold processed. The cold processing of stainless steel heat exchange tubes can also be divided into two processes: cold rolling and cold drawing.
There are three methods of cold drawing of stainless steel heat exchange tubes, namely, plug cold drawing, mandrel cold drawing and free cold drawing.[Plug cold drawing]: cold drawing is carried out with the end of the inner diameter of the finished product.[Mandrel cold drawing]: Use a mandrel with the same length as the stainless steel heat exchange tube for cold drawing, and the cold drawing of the mandrel can also make the inner wall of the stainless steel heat exchange tube smooth. Suitable for stainless steel heat exchange tubes with long dimensions.[Free cold drawing]: Adopt the cold joining method without mandrel.